import java.util.Scanner;public class AuthoringAssistant {    .pdf

import java.util.Scanner;
public class AuthoringAssistant {
// Creates an instance of Scanner class object
private static Scanner scanner = new Scanner(System.in);
/**
*
* The method that replaces two or more sapces with single spaces
* */
private static String shortenSpace(String text) {
String temp = text.trim().replaceAll(\" +\", \" \");
return temp;
}
/**
* The method replaces all exclamation marks with character \'.\'
* */
private static String replaceExclamation(String text) {
String temp = text.replaceAll(\"!\", \".\");
return temp;
}
/**
* The method findText that finds the number of occurenence of find in text
* and returns the count
* */
private static int findText(String text, String find) {
int count = 0;
int i = 0;
while ((i = text.indexOf(find)) != -1) {
text = text.substring(i + find.length());
count += 1;
}
return count;
}
/**
* the method takes a string and returns the number of words in the text.
* */
private static int getNumOfWords(String text) {
// call split method that returns the array of words
// split by spaces
text = shortenSpace(text);
String[] words = text.split(\" \");
// return count of words
return words.length;
}
/*
* The method getNumOfNonWSCharacters that remmoves the whitepsaces and
* returns the lenght of the text
*/
private static int getNumOfNonWSCharacters(String text) {
text = text.trim().replaceAll(\"\\\\s\", \"\");
return text.length();
}
/**
* The method printMenu that prints a menu of choices and prompts user to
* enter choice.
* */
private static void printMenu() {
System.out.println(\"\ MENU\");
System.out.println(\"c - Number of non-whitespace characters\");
System.out.println(\"w - Number of words\");
System.out.println(\"f - Find text\");
System.out.println(\"r - Replace all !\'s\");
System.out.println(\"s - Shorten spaces\");
System.out.println(\"q - Quit\");
System.out.println(\"\ Choose an option: \");
}
public static void main(String[] args) {
while(true) {
//prompt for the text
System.out.println(\"Enter a sample text: \");
String text = scanner.nextLine();
//Display user input
System.out.println(\"You entered: \" + text);
//Display menu
printMenu();
char ch = scanner.nextLine().charAt(0);
switch (ch) {
case \'q\':
// close the program
// System.out.println(\"Exit the program\");
System.exit(0);
case \'c\': // Number of non-whitespace characters
int cntNonWhitespaces = getNumOfNonWSCharacters(text);
System.out.println(\"Number of non-whitespace characters: \" + cntNonWhitespaces);
break;
case \'w\': // Number of words
int wordsCount = getNumOfWords(text);
System.out.println(\"Number of words: \" + wordsCount);
break;
case \'f\': // Find text
System.out.println(\"Enter a word or phrase to be found: \");
String find = scanner.nextLine();
int findCount = findText(text, find);
System.out.println(\"\\\"\" + find + \"\\\" instances: \" + findCount);
break;
case \'r\': // Replace all !\'s
String newstring = replaceExclamation(text);
System.out.println(\"Edited text: \" + newstring);
break;
case .

1. import java.util.Scanner;
public class AuthoringAssistant {
   // Creates an instance of Scanner class object
   private static Scanner scanner = new Scanner(System.in);
   /**
   *
   * The method that replaces two or more sapces with single spaces
   * */
   private static String shortenSpace(String text) {
       String temp = text.trim().replaceAll(\" +\", \" \");
       return temp;
   }
   /**
   * The method replaces all exclamation marks with character \'.\'
   * */
   private static String replaceExclamation(String text) {
       String temp = text.replaceAll(\"!\", \".\");
       return temp;
   }
   /**
   * The method findText that finds the number of occurenence of find in text
   * and returns the count
   * */
   private static int findText(String text, String find) {
       int count = 0;
       int i = 0;

       while ((i = text.indexOf(find)) != -1) {
           text = text.substring(i + find.length());
           count += 1;
       }
       return count;
   }
   /**
   * the method takes a string and returns the number of words in the text.

2.    * */
   private static int getNumOfWords(String text) {
       // call split method that returns the array of words
       // split by spaces
       text = shortenSpace(text);
       String[] words = text.split(\" \");
       // return count of words
       return words.length;
   }
   /*
   * The method getNumOfNonWSCharacters that remmoves the whitepsaces and
   * returns the lenght of the text
   */
   private static int getNumOfNonWSCharacters(String text) {
       text = text.trim().replaceAll(\"\\s\", \"\");
       return text.length();
   }
   /**
   * The method printMenu that prints a menu of choices and prompts user to
   * enter choice.
   * */
   private static void printMenu() {
       System.out.println(\" MENU\");
       System.out.println(\"c - Number of non-whitespace characters\");
       System.out.println(\"w - Number of words\");
       System.out.println(\"f - Find text\");
       System.out.println(\"r - Replace all !\'s\");
       System.out.println(\"s - Shorten spaces\");
       System.out.println(\"q - Quit\");
       System.out.println(\" Choose an option: \");
   }
   public static void main(String[] args) {
       while(true) {
           //prompt for the text
           System.out.println(\"Enter a sample text: \");
           String text = scanner.nextLine();

3.            //Display user input
           System.out.println(\"You entered: \" + text);

           //Display menu
           printMenu();
           char ch = scanner.nextLine().charAt(0);

           switch (ch) {
           case \'q\':
               // close the program
               // System.out.println(\"Exit the program\");
               System.exit(0);

           case \'c\':   // Number of non-whitespace characters
               int cntNonWhitespaces = getNumOfNonWSCharacters(text);
               System.out.println(\"Number of non-whitespace characters: \" + cntNonWhitespaces);
               break;

           case \'w\':   // Number of words
               int wordsCount = getNumOfWords(text);
               System.out.println(\"Number of words: \" + wordsCount);
               break;

           case \'f\':   // Find text
               System.out.println(\"Enter a word or phrase to be found: \");
               String find = scanner.nextLine();
               int findCount = findText(text, find);
               System.out.println(\"\\"\" + find + \"\\" instances: \" + findCount);
               break;

           case \'r\':   // Replace all !\'s
               String newstring = replaceExclamation(text);
               System.out.println(\"Edited text: \" + newstring);
               break;

4.            case \'s\':   // Shorten spaces
               newstring = shortenSpace(text);
               System.out.println(\"Edited text:\" + newstring);
               break;

           default:
               System.out.println(\"Invalid option. Please try again\");
           }

           System.out.println();
       }
   }
}
SAMPLE OUTPUT:
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
c
Number of non-whitespace characters: 134
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters

5. w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
w
Number of words: 26
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
f
Enter a word or phrase to be found:
more
\"more\" instances: 5
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces

6. q - Quit
Choose an option:
f
Enter a word or phrase to be found:
more shuttle
\"more shuttle\" instances: 2
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
r
Edited text: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
Enter a sample text:
We\'ll continue our!                       quest in space. There will be more shuttle flights and !more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our!                       quest in space. There will be more shuttle flights
and !more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
r

7. Edited text: We\'ll continue our.                       quest in space. There will be more shuttle flights
and .more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
s
Edited text:We\'ll continue our quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
q

Solution

import java.util.Scanner;

8. public class AuthoringAssistant {
   // Creates an instance of Scanner class object
   private static Scanner scanner = new Scanner(System.in);
   /**
   *
   * The method that replaces two or more sapces with single spaces
   * */
   private static String shortenSpace(String text) {
       String temp = text.trim().replaceAll(\" +\", \" \");
       return temp;
   }
   /**
   * The method replaces all exclamation marks with character \'.\'
   * */
   private static String replaceExclamation(String text) {
       String temp = text.replaceAll(\"!\", \".\");
       return temp;
   }
   /**
   * The method findText that finds the number of occurenence of find in text
   * and returns the count
   * */
   private static int findText(String text, String find) {
       int count = 0;
       int i = 0;

       while ((i = text.indexOf(find)) != -1) {
           text = text.substring(i + find.length());
           count += 1;
       }
       return count;
   }
   /**
   * the method takes a string and returns the number of words in the text.
   * */
   private static int getNumOfWords(String text) {

9.        // call split method that returns the array of words
       // split by spaces
       text = shortenSpace(text);
       String[] words = text.split(\" \");
       // return count of words
       return words.length;
   }
   /*
   * The method getNumOfNonWSCharacters that remmoves the whitepsaces and
   * returns the lenght of the text
   */
   private static int getNumOfNonWSCharacters(String text) {
       text = text.trim().replaceAll(\"\\s\", \"\");
       return text.length();
   }
   /**
   * The method printMenu that prints a menu of choices and prompts user to
   * enter choice.
   * */
   private static void printMenu() {
       System.out.println(\" MENU\");
       System.out.println(\"c - Number of non-whitespace characters\");
       System.out.println(\"w - Number of words\");
       System.out.println(\"f - Find text\");
       System.out.println(\"r - Replace all !\'s\");
       System.out.println(\"s - Shorten spaces\");
       System.out.println(\"q - Quit\");
       System.out.println(\" Choose an option: \");
   }
   public static void main(String[] args) {
       while(true) {
           //prompt for the text
           System.out.println(\"Enter a sample text: \");
           String text = scanner.nextLine();

           //Display user input

10.            System.out.println(\"You entered: \" + text);

           //Display menu
           printMenu();
           char ch = scanner.nextLine().charAt(0);

           switch (ch) {
           case \'q\':
               // close the program
               // System.out.println(\"Exit the program\");
               System.exit(0);

           case \'c\':   // Number of non-whitespace characters
               int cntNonWhitespaces = getNumOfNonWSCharacters(text);
               System.out.println(\"Number of non-whitespace characters: \" + cntNonWhitespaces);
               break;

           case \'w\':   // Number of words
               int wordsCount = getNumOfWords(text);
               System.out.println(\"Number of words: \" + wordsCount);
               break;

           case \'f\':   // Find text
               System.out.println(\"Enter a word or phrase to be found: \");
               String find = scanner.nextLine();
               int findCount = findText(text, find);
               System.out.println(\"\\"\" + find + \"\\" instances: \" + findCount);
               break;

           case \'r\':   // Replace all !\'s
               String newstring = replaceExclamation(text);
               System.out.println(\"Edited text: \" + newstring);
               break;

           case \'s\':   // Shorten spaces
               newstring = shortenSpace(text);

11.                System.out.println(\"Edited text:\" + newstring);
               break;

           default:
               System.out.println(\"Invalid option. Please try again\");
           }

           System.out.println();
       }
   }
}
SAMPLE OUTPUT:
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
c
Number of non-whitespace characters: 134
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text

12. r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
w
Number of words: 26
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
f
Enter a word or phrase to be found:
more
\"more\" instances: 5
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:

13. f
Enter a word or phrase to be found:
more shuttle
\"more shuttle\" instances: 2
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
r
Edited text: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
Enter a sample text:
We\'ll continue our!                       quest in space. There will be more shuttle flights and !more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our!                       quest in space. There will be more shuttle flights
and !more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
r
Edited text: We\'ll continue our.                       quest in space. There will be more shuttle flights
and .more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.

14. Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
s
Edited text:We\'ll continue our quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
Enter a sample text:
We\'ll continue our                       quest in space. There will be more shuttle flights and more
shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
You entered: We\'ll continue our                       quest in space. There will be more shuttle flights
and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space.
MENU
c - Number of non-whitespace characters
w - Number of words
f - Find text
r - Replace all !\'s
s - Shorten spaces
q - Quit
Choose an option:
q